class_docstr: PushbackIterator(iterable)
  
  Return an iterator for which items can be pushed back into.
  Call the .pushback(item) method to have item returned as the next
  value of next().
class_docstr_tok: ["PushbackIterator","(","iterable",")","Return","an","iterator","for","which","items","can","be","pushed","back","into",".","Call","the",".pushback","(","item",")","method","to","have","item","returned","as","the","next","value","of","next","(",")","."]
code: def __iter__(self):
      return self
  
file_path: catboost/contrib/python/numpy/py3/numpy/linalg/lapack_lite/fortran.py
imports: import re
  import itertools
label_desc: Use image node_id 2 for calling the PushbackIterator obj's underlying member method code with example usage: obj.__iter__() and returns: self